MpiExec Lolbin — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2022-01-11 / 2024-11-23.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: e1be2d0b00363623170c21fc90d1e82a73886ccfd22ec34535c6991ec09f797d

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: MpiExec Lolbin
id: 729ce0ea-5d8f-4769-9762-e35de441586d
status: test
description: Detects a certain command line flag combination used by mpiexec.exe LOLBIN from HPC pack that can be used to execute any other binary
references:
    - https://twitter.com/mrd0x/status/1465058133303246867
    - https://learn.microsoft.com/en-us/powershell/high-performance-computing/mpiexec?view=hpc19-ps
author: Florian Roth (Nextron Systems)
date: 2022-01-11
modified: 2024-11-23
tags:
    - attack.execution
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_binary:
        - Image|endswith: '\mpiexec.exe'
        - Hashes|contains: 'IMPHASH=d8b52ef6aaa3a81501bdfff9dbb96217'
    selection_flags:
        CommandLine|contains:
            - ' /n 1 '
            - ' -n 1 '
    condition: all of selection*
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://twitter.com/mrd0x/status/1465058133303246867
• https://learn.microsoft.com/en-us/powershell/high-performance-computing/mpiexec?view=hpc19-ps